The purpose of this study is to examine the costume represented In human clay figures of ancient Shilla dynasty. The results of this study could be summarized as follows: 1. Horse-riding clay figures of Gumryoung tomb. At first, human-A wears a brimed-triangular hat, a Jacket, a checked pants. The brimed-triangular hat is decorated with bird-feather shape. Besides, a jacket is tied with a waist belt, and the waist belt is connected with a shoulder belt and a squared block of back. Also round bells are decorated 15 in the hat, 4 In connection points of the waist belt and the shoulder belt, and 13 in the squared block of back. Human-B wears a hairband type hempen hood, a Jacket, a pants with vertical stripes. and something is rounded from right shoulder to left side. It is one of the symbols as a shaman. 2. Other clay figures. The hats examined from other clay figures are circled1 Triangular hat, circled2Hat decorated with bird-feather shape, circled3 Brined hat and circled4 Hairband type hempen hood. Next, six kinds of hair styles examined are circled1 a topknot, circled2 a slanted topknots, circled3 two topknots on both sides, circled4(round) chignon, circled5 hair tied at the top and plastered down, and tile last, circled6 ponytailed style on both sides. The costume examined is a jacket and a pants.